Fidget toys have blown up in popularity recently, and while this phenomenon has left many people scratching their heads as to why adults are suddenly playing with toys at work, research has shown that these little devices can help improve your concentration and relieve stress by providing a way to release nervous energy with your hands.

If you are prone to procrastinating, getting distracted, or just feeling anxious, a fidget toy might be just the ticket. We’ve picked out several inexpensive but high-quality models, including standard spinners and cubes, as well as some other unique designs, so you can try one out for cheap.